<main-box title="我是主指令的内容">
  <content-directive></content-directive>
  <menu-directive></menu-directive>
</main-box>
<div class="alert alert-danger" role="alert">
  transclude:Obejct, 定义嵌套的多个其他指令，并且通过ng-transclude指令放在什么位置
</div>
<pre>
  zppdirective.directive('mainBox', function(){
      return {
        restrict: 'EA',
        scope: {
          title: '@',
        },
        transclude: {
          'content': 'contentDirective',
          'menu': '?menuDirective'
        },
        templateUrl: 'app/views/template/subtransclude2.html',
      }
    })
  zppdirective.directive('contentDirective', function() {
    return {
      restrict : 'EA',
      template: '<div>我是内容指令的内容</div>'
    }
  })
  zppdirective.directive('menuDirective', function() {
    return {
      restrict : 'EA',
      template: '<div>我是菜单指令的内容</div>'
    }
  })
</pre>
